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Sigma-Aldrich E4382 Eosin Y disodium salt certified by the Biological Stain Commission 100 gr

Stock Code
LB.SA.E4382-100G
Kısa Bilgi
Synonym(s): 2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Acid Red 87, Bromo acid J. TS, XL, or XX, Bromofluorescein, Bronze Bromo ES, D&C;Red No. 22, Eosin yellowish Empirical Formula (Hill Notation): C20H6Br4Na2O5 CAS Number: 17372-87-1 Molecular Weight: 691.85 Colour Index Number: 45380 Beilstein: 3586809 EC Number: 241-409-6 MDL number: MFCD00005040 PubChem Substance ID: 24894551 NACRES: NA.47
Market Price
CAS Number: 17372-87-1
Pre-ordered Product
Sigma-Aldrich E4382 Eosin Y disodium salt certified by the Biological Stain Commission 
Synonym(s): 2′,4′,5′,7′-Tetrabromofluorescein disodium salt, Acid Red 87, Bromo acid J. TS, XL, or XX, Bromofluorescein, Bronze Bromo ES, D&C;Red No. 22, Eosin yellowish
Empirical Formula (Hill Notation):
C20H6Br4Na2O5
CAS Number:
17372-87-1
Molecular Weight:
691.85
Colour Index Number:
45380
Beilstein:
3586809
EC Number:
241-409-6
MDL number:
MFCD00005040
PubChem Substance ID:
24894551
NACRES:
NA.47
Sigma-Aldrich E4382 Eosin Y disodium salt certified by the Biological Stain Commission     
PROPERTIES
grade certified by the Biological Stain Commission
Quality Level
200
form
powder composition Dye content, ≥90%
color
brown
pH
6.55 (29 °C, 84 °F)
mp
255 — 270 °C (491 - 518 °F at 977.9 hPa)
solubility
H2O: 1 mg/mL
density
1.018 g/cm3
application(s)
diagnostic assay manufacturing, hematology, histology
storage temp.
room temp
SMILES string
[Na+].[Na+].[O-]C(=O)c1ccccc1C2=C3C=C(Br)C(=O)C(Br)=C3Oc4c(Br)c([O-])c(Br)cc24
InChI
1S/C20H8Br4O5.2Na/c21-11-5-9-13(7-3-1-2-4-8(7)20(27)28)10-6-12(22)17(26)15(24)19(10)29-18(9)14(23)16(11)25;;/h1-6,25H,(H,27,28);;/q;2*+1/p-2
InChI key
SEACYXSIPDVVMV-UHFFFAOYSA-L


DESCRIPTION
Application
Eosin Y disodium salt has been used as a counterstain in immunocytochemistry and immunohistochemistry.[1][2]
Biochem/physiol Actions
Eosin Y is a xanthene dye and is used for the differential staining of connective tissue and cytoplasm. In histopathology, it is applied as a counterstain after hematoxylin and before methylene blue. It is also used as a background stain, thereby giving contrast to the nuclear stains.[3][4]
Suitability
Certified for use as a counterstain against hematoxylin; as a constituent of Wright stain; in modified Nocht′s stain; as a constituent in eosin-methylene blue medium.

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Sigma-Aldrich E4382 Eosin Y disodium salt certified by the Biological Stain Commission 100 gr Empirical Formula (Hill Notation): C20H6Br4Na2O5, CAS Number: 17372-87-1, Molecular Weight: 691.85, Colour Index Number: 45380, Beilstein: 3586809 LB.SA.E4382-100G
Sigma-Aldrich E4382 Eosin Y disodium salt certified by the Biological Stain Commission 100 gr

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